Influence of cold remote nitrogen oxygen plasma treatment on carbon fabric and its composites with specialty polymers |
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Authors: | Sudhir Tiwari Mohit Sharma Stephane Panier Brigitte Mutel Peter Mitschang Jayashree Bijwe |
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Affiliation: | 1.Industrial Tribology Machine Dynamics and Maintenance Engineering Centre (ITMMEC), Indian Institute of Technology, Delhi,New Delhi,India;2.Polymers and Composites Technology & Mechanical Engineering Department,Douai,France;3.Groupe “BioMEMS” - Equipe “Procédés Plasma et Matériaux”,IEMN - UMR 8520, Université de Lille 1 Sciences et Technologie,Villeneuve d’Ascq Cedex,France;4.Institut für Verbundwerkstoffe GmbH, Verarb Fungstechnik,Kaiserslautern,Germany |
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Abstract: | The parameters controlling performance of a fiber-reinforced polymer composite are type of matrix and fibers, their amount,
aspect ratio, fiber orientation with respect to loading direction, fiber–matrix interface, and processing technique. In the
case of carbon fiber reinforcement, fiber–matrix interface has always been a serious concern, because of chemical inertness
of carbon fibers toward matrix and hence efforts are continued to enhance the fiber–matrix adhesion. A recent technique of
cold remote nitrogen oxygen plasma was employed for surface treatment of carbon fabric (CF) to enhance its chemical reactivity
and mechanical interaction toward matrix material. Untreated and plasma treated CF were used as bidirectional reinforcement
for developing high performance composites with various specialty polymer matrices such as Polyetherimide, Polyethersulfone,
and Polyetheretherketone. Treated CF reinforced composites showed appreciable improvement in most of the mechanical properties,
which varied with type of plasma, its dozing and matrix used. X-ray Photoelectron Spectroscopy confirmed improvement in O/C
and N/C ratio indicating inclusion of Oxygen and Nitrogen on the surfaces of fibers due to plasma treatment, which was responsible
for enhanced adhesion. Similarly, Fourier Transform Infrared–Attenuated Total Reflectance Spectroscopy indicated presence
of ether, carboxylic, and carbonyl functional groups on the plasma-treated surface of fibers. Raman spectroscopy indicated
slight distortion in graphitic structure of treated CF. Scanning Electron Microscopy also indicated changes in the topography
of treated CF, indicating enhanced mechanical interlocking with matrix. |
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